Beginning C++17: From Novice to Professional

© Ivor Horton and Peter Van Weert 2018

Ivor Horton and Peter Van WeertBeginning C++17https://doi.org/10.1007/978-1-4842-3366-5_9

9. Function Templates

Ivor Horton¹  and Peter Van Weert²

(1)

Stratford-upon-Avon, Warwickshire, UK

(2)

Kessel-Lo, Belgium

 

In the section on overloading in the previous chapter, you may have noticed that some of the overloaded functions consisted of exactly the same code. The only difference is the types that appear in the parameter list. It seems an unnecessary overhead to have to write the same code over and over, and indeed it is. In such situations, you can write the code just once, as a function template. The Standard Library, for instance, makes heavy use of this feature to ensure that its functions work optimally with ...